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ECC83


G8LSD Valve Collection
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Sensibly equivalent to:- 12AX7 - 6L13 - B339 - CV492 - 12DT7 - E2164 - E813CC
 
See also:
Mullard's ECC83 - A New 25W Audio Output Pentode - High Quality Audio Amplification - Pin Compatible Double Triodes - Made for Music Advert - More Transformerless Amplifiers - Audiophiles Advert - Double Triodes in Audio Amplifiers Advert
 
This exhibit was last updated on 05 July 2014
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The ECC83 high impedance amplifier triode was designed specifically for audio use and has a high amplification factor of 100. Mullard describe the ECC83 as a high μ double triode, having separate cathodes, primarily intended for use as a resistance-coupled amplifier or phase inverter.
This valve is still found in todays designs of hi-fi audio amplifiers. In the classic Mullard designs of the 1950s and 1960s the valve's two halves were used as second stage amplification and cathode coupled phase splitter.
The phase splitter being required so that the push-pull output stage was driven correctly.
The thin glass tube envelope is 21 mm in diameter and, excluding the B9A base pins, is 48 mm tall.
References: Datasheet, 3002 & 1040. Type ECC83 was first introduced in 1954.
 
Pin Connections
B9A
1
2
3
4
5
6
7
8
9
a(2)
g1(2)
k(2)
h
h
a(1)
g1(1)
k(1)
hct
 
Absolute Maximum Operating Conditions
Triode
Vh
Ah
Va
Vg
mAa
ra
gm
6.3
0.3
250
-2
1.2
62.5K
1.6

PDF scanned from an original document held by the museum
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